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烧结不锈钢纤维多孔材料是一种结构功能一体化材料,在冲击能量吸收和过滤分离等领域有广泛应用。利用微波加热法制备了316L不锈钢纤维多孔材料,利用μ-CT,SEM等研究了微波烧结工艺对材料微观结构和力学性能的影响。结果表明微波烧结工艺明显降低了材料的烧结温度,缩短了烧结时间,由此抑制了纤维杆上晶粒的生长,材料的力学性能也得到了提升。微波电磁场在金属纤维间引发的微电弧可起到加快烧结进程的作用。
Sintered stainless steel fiber porous material is a structural function of integrated materials, in the impact energy absorption and filtration and other fields are widely used. The 316L stainless steel fiber porous material was prepared by microwave heating method. The effects of microwave sintering process on the microstructure and mechanical properties of the material were studied by μ-CT and SEM. The results show that the microwave sintering process significantly reduces the sintering temperature of the material and shortens the sintering time, thereby restraining the growth of the grains on the fiber rod and improving the mechanical properties of the material. Micro-arc induced by microwave electromagnetic field between metal fibers can play a role in accelerating the sintering process.